Difference Between 32-bit and 64-bit JVM in Java - GeeksforGeeks
The 32-bit Java Runtime Environment is a specific version of the JRE that provides compatibility with 32-bit operating systems and applications. While it may not provide optimal performance or security, it is still a viable option for legacy applications and older systems. If you need to run 32-bit Java applications, the 32-bit JRE is a good choice. However, if you have a modern system with a 64-bit processor and operating system, you may want to consider using the 64-bit JRE for better performance and security. 32 bit java runtime environment
For large-scale data processing, 64-bit versions are superior because they can handle much larger datasets in memory without frequent disk swapping. Difference Between 32-bit and 64-bit JVM in Java